<!-- 专栏列表 -->
<template>
	<div class="row">
		<div v-for="column in columnList" :key="column.id" class="col-4 mb-4">
			<div class="card h-100 shadow-sm">
				<div class="card-body text-center">
					<img :src="column.avatar" :alt="column.title" class="rounded-circle border border-light w-25 my-3">
					<h5 class="card-title">{{column.title}}</h5>
					<p class="card-text text-left">{{column.description}}</p>
					<a href="#" class="btn btn-outline-primary">进入专栏</a>
				</div>
			</div>
		</div>
	</div>
</template>

<script lang="ts">
import { computed, defineComponent, PropType } from "vue";
export interface ColumnProps {
	id: number;
	title: string;
	avatar?: string;
	description: string;
}
export default defineComponent({
	name: "ColumnList",
	props: {
		list: {
			type: Array as PropType<ColumnProps[]>,
			required: true,
		},
	},
	setup(props) {
		const columnList = computed(() => {
			return props.list.map((item) => {
				// 加载默认头像
				if (!item.avatar) {
					item.avatar = require("@/assets/logo.png");
				}
				return item;
			});
		});
		return {
			columnList,
		};
	},
});
</script>

<style>
</style>
